Students from DPS International School taking part in a treasure hunt last October. The school is one of three main Indian schools in Singapore. Mr Lee says that under consideration is a rule that if Indian nationals did not attend a Singapore secondary school, they would not qualify for PR status. --PHOTO: DPS INTERNATIONAL SCHOOL YOUNG Indian nationals who want to become Singapore permanent residents (PRs) may be required to attend local secondary schools, not Indian international schools. This has been considered, Minister Mentor Lee Kuan Yew says in the book Hard Truths, launched on Friday. He did not say it would be made a rule. He made the point when a team of Straits Times journalists probed his views on Singapore's immigration policy. Noting the rising numbers of Indian nationals in Singapore, he said many were highly qualified but needed to integrate better into t...